Solar Power Payback Calculations

Interested in Reduction in Electricity Consumption and Return on Investment (ROI)?

Reduction in Grid Power Consumption

Assumptions:

• 5 hours of sunshine on average per day 365 days per year (Australia Wide approximation of sun hours)
• Australian households use about 16 kWh per day (Australian Bureau of Statistics, 1995)
• Energy Matters Grid Connect 1kW System Installed (Approx Nett Payable = $5,000)

Energy Matters Grid Connect 1kW System = 5kWh per day of Solar Power*
Reduction in Electricity Consumption = 31.25%

Please check your electricity bills for daily kWh use in your household to determine precise kWh consumption and corresponding reduction in electricity costs.

ROI Calculation

Assumptions:

• Energy Matters Grid Connect 1kW System Value Approx: $13,500
• Rebate: $8,000.00
• RECS: $500.00
• Energy Matters Grid Connect 1kW System Nett Payable Approx: $5,000
• Peak Price for Energy (currently and increasing): 20C per kwh
• Average solar irradiation of 5 hours of sunshine per day

Energy Matters Grid Connect 1kW System = 5kWh per day of Solar Power*
Saving per day = $1.00
Saving per year = $365
Nett Payable = $5,000
ROI = 7.3% pa
Time to repay itself given current electricity price = 13.69 years

*Energy generation based on solar panels facing north at 30 degree tilt.

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